Theoretical model for the morphotropic phase boundary in lead zirconate–lead titanate solid solution

1993 ◽  
Vol 47 (9) ◽  
pp. 4825-4830 ◽  
Author(s):  
Wenwu Cao ◽  
L. Eric Cross
Keyword(s):  
Solid Solution ◽  
Theoretical Model ◽  
Phase Boundary ◽  
Morphotropic Phase Boundary ◽  
Lead Titanate ◽  
Lead Zirconate

Hydrothermal epitaxy of lead free (Na,K)NbO3-based piezoelectric films

2013 ◽  
Vol 1547 ◽  
pp. 45-52
Author(s):  
Albertus D. Handoko ◽  
Gregory K. L. Goh
Keyword(s):  
Thin Films ◽  
Solid Solution ◽  
Phase Boundary ◽  
Hydrothermal Method ◽  
Morphotropic Phase Boundary ◽  
Solid Solutions ◽  
Lead Zirconate Titanate ◽  
Piezoelectric Properties ◽  
Lead Zirconate ◽  
Lead Free

ABSTRACTLead free niobate solid solutions can exhibit piezoelectric properties comparable to that of lead zirconate titanate piezoelectrics in the vicinity of its morphotropic phase boundary (MPB). Here we describe how (Na,K)NbO3 and (Na,K)NbO3-LiTaO3 solid solution thin films can be grown epitaxially by the hydrothermal method at temperatures of 200 °C or below in water and be made ferro- and piezoelectrically active by a simple 2 step post growth treatment.

scholarly journals Accelerated search for BaTiO3-based piezoelectrics with vertical morphotropic phase boundary using Bayesian learning

2016 ◽  
Vol 113 (47) ◽  
pp. 13301-13306 ◽  
Author(s):  
Dezhen Xue ◽  
Prasanna V. Balachandran ◽  
Ruihao Yuan ◽  
Tao Hu ◽  
Xiaoning Qian ◽  
...  
Keyword(s):  
Solid Solution ◽  
Phase Boundary ◽  
Morphotropic Phase Boundary ◽  
Bayesian Approach ◽  
Bayesian Learning ◽  
Piezoelectric Properties ◽  
Training Data ◽  
Materials Informatics ◽  
Initial Training ◽  
New Materials

An outstanding challenge in the nascent field of materials informatics is to incorporate materials knowledge in a robust Bayesian approach to guide the discovery of new materials. Utilizing inputs from known phase diagrams, features or material descriptors that are known to affect the ferroelectric response, and Landau–Devonshire theory, we demonstrate our approach for BaTiO3-based piezoelectrics with the desired target of a vertical morphotropic phase boundary. We predict, synthesize, and characterize a solid solution, (Ba0.5Ca0.5)TiO3-Ba(Ti0.7Zr0.3)O3, with piezoelectric properties that show better temperature reliability than other BaTiO3-based piezoelectrics in our initial training data.

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